861978

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:318

約数の個数: 32

約数和(自身を含む): 1907136

約数和(自身を除く): 1045158

約数列:

[1, 2, 3, 6, 13, 26, 39, 43, 78, 86, 129, 257, 258, 514, 559, 771, 1118, 1542, 1677, 3341, 3354, 6682, 10023, 11051, 20046, 22102, 33153, 66306, 143663, 287326, 430989, 861978]

約数ペア:

[(1, 861978), (2, 430989), (3, 287326), (6, 143663), (13, 66306), (26, 33153), (39, 22102), (43, 20046), (78, 11051), (86, 10023), (129, 6682), (257, 3354), (258, 3341), (514, 1677), (559, 1542), (771, 1118)]